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July 26th, 2026 :: 9:05 pm CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated July 26th at 7:54 pm 
mist
Temperature:82°F Dew Point:81°F
Barometer:29.89 inHg Wind:N 9 Mph
Humidity:94.3% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jul 26th
Monday
Jul 27th
Tuesday
Jul 28th
Wednesday
Jul 29th
Thursday
Jul 30th
Mostly Sunny Mostly Sunny Mostly Sunny Sunny Mostly Sunny
88°F
90°F
69°F
83°F
69°F
80°F
61°F
81°F
61°F
 
 Decatur Detailed Weather Forecast  
 
Sunday, July 26th, 2026
Evening Temperature: 83°F
Clear with cloudy periods with a chance of showers or thundershowers.
Monday, July 27th, 2026
Overnight Temperature: 77°F
Clear with cloudy periods with a chance of showers or thundershowers.
Morning Temperature: 74°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 88°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 85°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Tuesday, July 28th, 2026
Overnight Temperature: 77°F
Clear. Chance of a thunderstorm.
Morning Temperature: 78°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 83°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
Clear. Chance of a thunderstorm.
Wednesday, July 29th, 2026
Overnight Temperature: 62°F
Clear.
Morning Temperature: 68°F
Sunny. Windy at times.
Afternoon Temperature: 80°F
Sunny.
Evening Temperature: 72°F
Clear. Slight chance of a thunderstorm.
Thursday, July 30th, 2026
Overnight Temperature: 63°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 80°F
Mostly sunny.
Evening Temperature: 73°F
Clear with cloudy periods.
Friday, July 31st, 2026
Overnight Temperature: 68°F
Mostly cloudy with a chance of showers.
Morning Temperature: 67°F
Cloudy with showers likely. Windy at times.
Afternoon Temperature: 75°F
Sunny with cloudy periods with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 73°F
A mix of clear and cloudy skies with a chance of showers or thundershowers.
Saturday, August 1st, 2026
Overnight Temperature: 69°F
A mix of cloudy and clear skies with a slight chance of showers. Windy at times.
Morning Temperature: 68°F
Sunny. Windy at times.
Afternoon Temperature: 68°F
A mix of cloud and sun with a slight chance of showers. Windy at times.
Evening Temperature: 67°F
A mix of cloudy and clear skies. Windy at times.
Sunday, August 2nd, 2026
Overnight Temperature: 67°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 68°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 75°F
A mix of sun and cloud with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 71°F
Clear with a slight chance of showers.
Monday, August 3rd, 2026
Overnight Temperature: 66°F
Clear.
Morning Temperature: 71°F
Sunny with cloudy periods. Slight chance of a thunderstorm.
Afternoon Temperature: 81°F
A mix of sun and cloud. Chance of a thunderstorm.
Evening Temperature: 75°F
Mostly clear. Chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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